1. Unit 6: Ratios and Percent

2. Review from your time with crazy Mr. Stead Which of the following images are… - Percentages? - Decimals? - Fractions? - Ratios?

3. Write 0.50 as… A percent A fraction A ratio

4. Review on Fractions How many different ways do you know how to write them? What are equivalent fractions? - 2/4 = 1/2 Do you know how to write mixed numbers?

5. What is A Ratio? Comparison of any two quantities - ex: 4 apples and 2 bananas - How would we write this as a ratio? Create this ratio using snakes and ladders: - 2:5 - 3:7 - 4:2

6. Two Terms Ratio – Comparison of two quantities (amounts) measures in the same units - 4:3 Term - The two numbers in a ratio. - Neither number can be zero - ex: The 4 and 3 above

7. Answer This Question The Easter Bunny left 6 Hershey Kisses and some Jujubes. The ratio of kisses to jujubes was 3:2. Altogether, how many Hershey Kisses and Jujubes did the Easter Bunny leave?

8. Another Question The ratio of men to women in a family is 2:3. The ratio of men to the entire family is 2:5 How many women are in the family? (Exclude all pets :P)

9. Appropriate Ratio Language 3:2 - 3 to 2 - 3 for every two Why might you have this ratio as 4:1, or as 1:4? - BBBBG B= boy G=girl What are equivalent ratios for the following numbers? 6:4 8:16 9:20

10. Make a Doodle By Row! Make a sketch showing: - Row 1:The Ratio of boys to girls in the class - Row 2: Desks to students - Row 3: Pencils in class to paper in an exercise book - Row 4: Teachers in school to students in class

11. Look at the Following Nutrition Labels What are the ratios for: - Calories to Calories - Fat to Fat - Carbohydrates to Carbohydrates

12. When Do We Use Ratios in Real-Life Situations? Maps - Ratios shows distance on a map - ex: 1:1000 – 1cm = 1000km Mixing gas and oil in chainsaws - 50:1 - For every 50L of gas, 1L of oil is needed

13. Part/Part and Part/Whole Ratios For example… - There are 5 boys and 13 girls (oh, boy…) in our class - The whole, or total number of students is 18 - One part of the whole is the 5 boys - The other part is the 13 girls 13+5 = 18!!!

14. Part/Part What is the ratio of boys to girls? - 5:13 What is the ratio of girls to boys? - 13:5

15. Part/Whole What is the ratio of boys to the entire class? - 5:18 What is the ratio of girls to the entire class? - 13:18

16. Question Write out your full name Add up the total number of letters Add up the total number of vowels Add up the total number of consonants What is the ratio of vowels to consonants? Is this part/part or part/whole? What is the ratio of vowels to your total number of letters? Is this part/part or part/whole? What is the ratio of consonants to the total number of letters?

17. More on Equivalent Ratios In this diagram: - X000 - Write equivalent ratios to this diagram. Explain your thinking. For the following ratios, find an equivalent ratio that has one of the terms as 20 - 4:6 - 10:30 - 3:5 - 4:5

18. Questions Page 179: 1 Page 180: 3,7 Page 181: 10,11,13,15